| 摘要 |
PROBLEM TO BE SOLVED: To improve heat sealability, separability and economical efficiency for a synthetic resin container. SOLUTION: Twilled sealing and linear sealing are executed simultaneously for a synthetic resin container by employing a heat seal plate made up by fitting a plate body 3 having a linear sealing surface 3a into a fitting cavity 2b of a plate body 2 having a twilled sealing surface 2a and combining both of the plate bodies together. A twilled sealing part formed by the twilled sealing surface 2a is weak in sealing strength and is generally accommodative to easy separation for unsealing the synthetic resin container, and is available for protecting a linear sealing part formed by the linear sealing surface 3a. Sealing work can be completed by a single operation with a single sealing device. |
